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Pricing and specifications subject to change without notice.
Infrasonic Quartet Configuration
Line Input - (1)
1/4" stereo connector on Quartet end, (2) 1/8" mono
connectors on LP-PAN end.
Speaker - (1) 1/4" stereo connector on Quartet end, appropriate
connector(s) on speaker end. You will need a pair of speakers (or
headphones) if you want to take full advantage of the sub-receiver in
PowerSDR, which feeds the main receiver to the left channel, and the
sub-receiver to the right channel.
Start by making sure you have downloaded the approprite driver at
The correct Windows driver as of Aug. 26, 2010 is ISQUARTET_V1.23.01_XPVISTAWIN7(20100413)
The pictures below are from driver version 1.14. Newer drivers may look
Open the Free Mixer panel, located at
Programs>INFRASONIC>FREEMIXER. Configure it as shown below, to
card input (HW IN 1/2) to feed both PowerSDR (ASIO IN
1/2) and CW Skimmer (WDM IN 1/2) at the same time. It also shows the
routing of PowerSDR (ASIO OUT 1/2) to the hardware output jack of
Quartet (HW OUT 1/2). Just click on the appropriate boxes, and the
program will create the correct routing.
Open the Quartet
located at Programs>INFRASONIC>Quartet
panel. Click on CONFIG and configure it as shown below.
and configure it as shown below. Set fader levels as shown for
use with LP-PAN. If you haven't done the K3 buffer mod, the fader
levels in the first mixer strip will need to be set a little higher.
is a picture of what the PowerSDR Audio Setup tab should look like for
this card. You may or may not need the Expert mode selected. On my
older PC, setting a latency of 2ms helped the card start reliably. All
other settings should be matched exactly as shown, except "Line In
Gain", "Mic In Gain" and "Output Voltage" which are meaningless in the
context of LP-PAN. Note: With older versions of the driver, the Quartet
card ASIO selection may not be listed as ASIO 2.2, since older drivers supported ASIO 2.0.
If you plan to use CW Skimmer
simultaneously with PowerSDR, use the following pictures as a guideline
for setting up Skimmer. Your
"Audio IF, Hz" setting will be different than mine. A ballpark setting
can be found using this formula...
CW Pitch - Global Offset = Audio IF, Hz
CW Pitch is the setting in the K3. It should also be set in
PowerSDR and LP-Bridge to match.
Global Offset is the setting in PowerSDR>Setup>SoftRock IF Stage
tab. You will need to fine tune it after the initial setting. Use the
default CW filter in the K3 when doing this. Make sure the DSP controls
are set to NORmal, as they shift the Skimmer display if not.